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Sci Rep

Title:		Ozone Improves the Aromatic Fingerprint of White Grapes
Author(s):		Rio Segade S; Vilanova M; Giacosa S; Perrone I; Chitarra W; Pollon M; Torchio F; Boccacci P; Gambino G; Gerbi V; Rolle L;
Address:		"Universita degli Studi di Torino, Dipartimento di Scienze Agrarie, Forestali e Alimentari, Largo Paolo Braccini 2, 10095, Grugliasco, TO, Italy. Mision Biologica de Galicia, Spanish National Research Council (CSIC), El Palacio-Salcedo, 36143, Pontevedra, Spain. Consiglio Nazionale delle Ricerche, Istituto per la Protezione Sostenibile delle Piante, Strada delle Cacce 73, 10135, Torino, Italy. Centro di Ricerca per la Viticoltura e l'Enologia - Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria, Via XXVIII Aprile, 31015, Conegliano, TV, Italy. Universita Cattolica del Sacro Cuore, Istituto di Enologia e Ingegneria Agro-Alimentare, Via Emilia Parmense 84, 29122, Piacenza, Italy. Consiglio Nazionale delle Ricerche, Istituto per la Protezione Sostenibile delle Piante, Strada delle Cacce 73, 10135, Torino, Italy. giorgio.gambino@ipsp.cnr.it. Universita degli Studi di Torino, Dipartimento di Scienze Agrarie, Forestali e Alimentari, Largo Paolo Braccini 2, 10095, Grugliasco, TO, Italy. luca.rolle@unito.it"
Journal Title:		Sci Rep
Year:		2017
Volume:		20171124
Issue:		1
Page Number:		16301 -
DOI:		10.1038/s41598-017-16529-5
ISSN/ISBN:		2045-2322 (Electronic) 2045-2322 (Linking)
Abstract:		"Ozone, a powerful oxidative stressor, has been recently used in wine industry as sanitizing agent to reduce spoilage microflora on grapes. In this study, we evaluated ozone-induced metabolic and molecular responses during postharvest grape dehydration. Ozone increased the contents of total volatile organic compounds (VOCs), which have a great impact on the organoleptic properties of grapes and wines. Among terpenes, responsible for floral and fruity aroma, linalool, geraniol and nerol were the major aromatic markers of Moscato bianco grapes. They were significantly affected by the long-term ozone treatment, increasing their concentration in the last phases of dehydration (>20% weight loss). At molecular level, our results demonstrated that both postharvest dehydration and ozone exposure induce the biosynthesis of monoterpenes via methylerythritol phosphate (MEP) pathway and of aldehydes from lipoxygenase-hydroperoxide lyase (LOX-HPL) pathway. Therefore, transcriptional changes occurred and promoted the over-production of many important volatile compounds for the quality of white grapes"
Keywords:		Aldehyde-Lyases/metabolism Cytochrome P-450 Enzyme System/metabolism Fruit/drug effects/metabolism Ozone/*pharmacology Vitis/*drug effects/*metabolism Volatile Organic Compounds/metabolism;
Notes:		"MedlineRio Segade, Susana Vilanova, Mar Giacosa, Simone Perrone, Irene Chitarra, Walter Pollon, Matteo Torchio, Fabrizio Boccacci, Paolo Gambino, Giorgio Gerbi, Vincenzo Rolle, Luca eng Research Support, Non-U.S. Gov't England 2017/11/28 Sci Rep. 2017 Nov 24; 7(1):16301. doi: 10.1038/s41598-017-16529-5"